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WM8310 Datasheet(PDF) 216 Page - Wolfson Microelectronics plc |
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WM8310 Datasheet(HTML) 216 Page - Wolfson Microelectronics plc |
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216 / 291 page  WM8310 Pre-Production w PP, May 2012, Rev 3.1 216 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO 0 = Normal 1 = Sink current cannot be regulated 12 CS1_SLPENA 0 Current Sink 1 SLEEP Enable 0 = Disabled 1 = Controlled by CS1_ENA 11:10 CS1_OFF_RA MP [1:0] 01 ISINK1 Switch-Off ramp 00 = instant (no ramp) 01 = 1 step every 4ms (220ms) 10 = 1 step every 8ms (440ms) 11 = 1 step every 16ms (880ms) The time quoted in brackets is valid for the maximum change in current drive setting. The actual time scales according to the extent of the change in current drive setting. 9:8 CS1_ON_RAM P [1:0] 01 ISINK1 Switch-On ramp 00 = instant (no ramp) 01 = 1 step every 4ms (220ms) 10 = 1 step every 8ms (440ms) 11 = 1 step every 16ms (880ms) The time quoted in brackets is valid for the maximum change in current drive setting. The actual time scales according to the extent of the change in current drive setting. 5:0 CS1_ISEL [5:0] 00_0000 ISINK1 current. Current = 2.0µA × 2^(CS1_ISEL/4), where CS1_ISEL is an unsigned binary number. Alternatively, CS1_ISEL = 13.29 x LOG(current/2.0µA) 00_0000 = 2.0µA 11_0111 = 27.6mA Values greater than 11_0111 will result in the maximum current of approx 27.6mA. Register 404Eh Current Sink 1 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R16463 (404Fh) Current Sink 2 15 CS2_ENA 0 Current Sink 2 Enable (ISINK2 pin) 0 = Disabled 1 = Enabled Note - this bit is reset to 0 when the OFF power state is entered. 14 CS2_DRIVE 0 Current Sink 2 output drive enable 0 = Disabled 1 = Enabled 13 CS2_STS 0 Current Sink 2 status 0 = Normal 1 = Sink current cannot be regulated 12 CS2_SLPENA 0 Current Sink 2 SLEEP Enable 0 = Disabled 1 = Controlled by CS2_ENA |
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